Connect Dell XPS-15 with Ubuntu 18.04 to Samsung 6 Series TV with HDMI

I am trying to use my Samsung 6 Series TV as a secondary monitor for Dell XPS-15 laptop using an HDMI cable. I am running Ubuntu 18.04.

What I am encountering is that on my laptop, the second display is detected, I can go into the Displays tab under Devices in the Settings and see that a Samsung Electric Company 85" is detected.

On the display of the Samsung TV however, I see that there is No Signal.

When I have connect instead to an LG TV, or a Dell monitor, I have encountered no problems.

I have tried using the Samsung TV as a second display with this same laptop, but on my Windows partition (I am dual-booting), and I have encountered no problems with using the Samsung TV as a second display, which leads me to think that there must be something I can do to get this setup to work with Ubuntu as well.

Any help would be greatly appreciated!

More information:

If I run the command lshw -c video, I get the following output:

WARNING: you should run this program as super-user. *-display description: 3D controller product: NVIDIA Corporation vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:180 memory:ec000000-ecffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:3000(size=128) memory:ed000000-ed07ffff *-display description: VGA compatible controller product: Intel Corporation vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 00 width: 64 bits clock: 33MHz capabilities: vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:178 memory:eb000000-ebffffff memory:80000000-8fffffff ioport:4000(size=64) memory:c0000-dffff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.

If I run the command modinfo $(modprobe --resolve-alias nvidia), this gives me:

filename: /lib/modules/5.4.0-81-generic/updates/dkms/nvidia.ko
alias: char-major-195-*
version: 460.91.03
supported: external
license: NVIDIA
srcversion: EA32CEBBA576FA0CDF3786B
alias: pci:v000010DEd*sv*sd*bc03sc02i00*
alias: pci:v000010DEd*sv*sd*bc03sc00i00*
depends:
retpoline: Y
name: nvidia
vermagic: 5.4.0-81-generic SMP mod_unload modversions
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
parm: NvSwitchRegDwords:NvSwitch regkey (charp)
parm: NvSwitchBlacklist:NvSwitchBlacklist=uuid[,uuid...] (charp)
parm: nv_cap_enable_devfs:Enable (1) or disable (0) nv-caps devfs support. Default: 1 (int)
parm: NVreg_ResmanDebugLevel:int
parm: NVreg_RmLogonRC:int
parm: NVreg_ModifyDeviceFiles:int
parm: NVreg_DeviceFileUID:int
parm: NVreg_DeviceFileGID:int
parm: NVreg_DeviceFileMode:int
parm: NVreg_InitializeSystemMemoryAllocations:int
parm: NVreg_UsePageAttributeTable:int
parm: NVreg_RegisterForACPIEvents:int
parm: NVreg_EnablePCIeGen3:int
parm: NVreg_EnableMSI:int
parm: NVreg_TCEBypassMode:int
parm: NVreg_EnableStreamMemOPs:int
parm: NVreg_EnableBacklightHandler:int
parm: NVreg_RestrictProfilingToAdminUsers:int
parm: NVreg_PreserveVideoMemoryAllocations:int
parm: NVreg_EnableS0ixPowerManagement:int
parm: NVreg_S0ixPowerManagementVideoMemoryThreshold:int
parm: NVreg_DynamicPowerManagement:int
parm: NVreg_DynamicPowerManagementVideoMemoryThreshold:int
parm: NVreg_EnableUserNUMAManagement:int
parm: NVreg_MemoryPoolSize:int
parm: NVreg_KMallocHeapMaxSize:int
parm: NVreg_VMallocHeapMaxSize:int
parm: NVreg_IgnoreMMIOCheck:int
parm: NVreg_NvLinkDisable:int
parm: NVreg_EnablePCIERelaxedOrderingMode:int
parm: NVreg_RegisterPCIDriver:int
parm: NVreg_RegistryDwords:charp
parm: NVreg_RegistryDwordsPerDevice:charp
parm: NVreg_RmMsg:charp
parm: NVreg_GpuBlacklist:charp
parm: NVreg_TemporaryFilePath:charp

Finally, if I run the command lspci -nnk | grep -i vga -A3 | grep 'in use', I obtain:

Kernel driver in use: i915.

These commands I found on the askubuntu page: How can I find what video driver is in use on my system?

Thanks again!

1

1 Answer

I found a solution on the Samsung end. Under

Settings → General → External Device Manager

one can turn on the HDMI UHD Color Setting for the HDMI port you are connected to. Once this was turned on, the display from my laptop immediately appeared. Problem Solved!

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